TRONDHEIM, NORWAY - NOVEMBER 11: King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands and Crown Prince Haakon of Norway and Crown Princess Mette-Marit of Norway visit the Powerhouse Brattorkaia on November 11, 2021 in Trondheim, Norway. The Powerhouse is the most northern energy positive office building of the world. During the visit the royals visit the Norwegian Centre for Plankton Technology laboratory. The Dutch King and Queen are in Norway for a three day state visit. (Photo by Patrick van Katwijk/Getty Images)
